It seems the functionality will be similar to NfW - from Pilot briefing page:
A new NAIPS Internet Service (NIS) will totally replace the existing Pilot Briefing website, NAIPS for Windows (NfW) and AIS/MET in the coming months. Much of the functionality of NfW will be incorporated and many new features introduced in this new online tool.
Please note: You do not need to register for NIS. Your existing NAIPS logon will be transferred to NIS.
There will no cost or charge for the enhanced service provided by NIS.
Visit the
NAIPS Internet Service Project page for more information.